We complete the proof of the Friedlander, Gordon and Miller Conjecture that every finite abelian group whose Sylow 2-subgroup either is trivial or both non-trivial and non-cyclic is R-sequenceable. This settles a question of Ringel for abelian groups.

Native Isoelectric Focusing Free-flow Electrophoresis (IEF-FFE) Fractionation of Crude Protein Mixtures Peter J.A. Weber, Gerhard Weber, and Christoph Eckerskorn This protocol was adapted from "Native IEF-FFE Fractionation of Crude Protein Mixtures," contributed by Peter J.A. Weber, Gerhard Weber, and Christoph Eckerskorn, Chapter 19, in Purifying Proteins for Proteomics (ed. Simpson). Cold Spr...

By using the Ringel-Hall algebra approach, we investigate the structure of the Lie algebra L(Λ) generated by indecomposable constructible sets in the varieties of modules for any finite dimensional Calgebra Λ. We obtain a geometric realization of the universal enveloping algebra R(Λ) of L(Λ). This generalizes the main result of Riedtmann in [19]. We also obtain Green’s theorem in [6] in a geome...

Gerhard Fritz (Hg.): Schwäbisch Gmünd und der Erste Weltkrieg. (Einhorn) 2014. 351 S., zahlr. Abb.